Ethyl 2-(2,3,6-trichlorophenyl)-3-(trifluoromethyl)isonicotinate
Ethyl 2-(2,3,5-trichlorophenyl)-6-(trifluoromethyl)isonicotinate
Ethyl 2-(2,3,5-trichlorophenyl)-5-(trifluoromethyl)isonicotinate
Ethyl 2-(2,3,5-trichlorophenyl)-3-(trifluoromethyl)isonicotinate